| 摘要 |
PURPOSE:To fix a bushing with high efficiency of operation by permitting a bolt having a point harder than the bushing to be included in the bushing. CONSTITUTION:A cap 2 is provided with a screw hole 2c directed to a bushing 4. A bolt 9 is screwed into this screw hole 2c. The bolt 9 has a sharp point 9a harder than the bushing 4. When the bolt 9 is screwed into the screw hole 2c so that its point 9a abuts against the outer periphery of the bushing 4, the point 9a is included in the bushing 4 by turning hardly the bolt 9. Thus, since the rotational position or the like of the bushing in fixing same does not need to be aligned with the bolt, the efficiency of operation is improved. |
